AP US History This Day in American History October 21 1797 – The USS Constitution, a 44-gun U.S. Navy frigate built to fight Barbary pirates off the coast of Tripoli, is launched in Boston Harbor. The vessel performed commendably during the Barbary conflicts, and in 1805 a peace treaty with Tripoli was signed on the Constitution's deck. AP US History This Day in American History October 21 1910 – A massive explosion destroys the Los Angeles Times building in the city's downtown area, killing 21 and injuring many more. Since Los Angeles Times publisher Harrison Otis, a virulent opponent of unions, believed that the bomb was directed at him, he hired the nation's premier private detective, William J. Burns, to crack the case. AP US History This Day in American History October 21 1921 – President Warren G. Harding delivers a speech in Alabama in which he condemns lynchings—illegal hangings committed primarily by white supremacists against African Americans in the Deep South. AP US History This Day in American History October 21 1959 - President Dwight D. Eisenhower signs an executive order transferring the brilliant rocket designer Wernher von Braun and his team from the U.S. Army to the newly created National Aeronautics and Space Administration (NASA). Von Braun, the mastermind of the U.S. space program, had developed the lethal V-2 rocket for Nazi Germany during World War II.